FR2655604A1 - Double pneumatic thrust cylinder for self-steering axle, designed to obtain a greater degree of turning of the stub axles - Google Patents

Double pneumatic thrust cylinder for self-steering axle, designed to obtain a greater degree of turning of the stub axles Download PDF

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Publication number
FR2655604A1
FR2655604A1 FR8916520A FR8916520A FR2655604A1 FR 2655604 A1 FR2655604 A1 FR 2655604A1 FR 8916520 A FR8916520 A FR 8916520A FR 8916520 A FR8916520 A FR 8916520A FR 2655604 A1 FR2655604 A1 FR 2655604A1
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France
Prior art keywords
double pneumatic
rods
pneumatic cylinder
double
self
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Pending
Application number
FR8916520A
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French (fr)
Inventor
Tonarelli Giovanni
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Individual
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Individual
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Priority to FR8916520A priority Critical patent/FR2655604A1/en
Publication of FR2655604A1 publication Critical patent/FR2655604A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D13/00—Steering specially adapted for trailers
    • B62D13/06—Steering specially adapted for trailers for backing a normally drawn trailer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D13/00—Steering specially adapted for trailers
    • B62D13/04—Steering specially adapted for trailers for individually-pivoted wheels

Abstract

The present invention relates to a double pneumatic thrust cylinder whose role is that of acting as a stop piece alternately for the stub axles (2) of a self-steering axle (4), which can operate in forwards or reverse travel. Fig. 4 shows these double pneumatic thrust cylinders in operation in a bend. The top thrust cylinder, fed by the arrival of air (18) is under pressure, and acts as a stop piece. The bottom one, which is at rest (therefore practically empty of air) in contrast allows the free excursion of the rods (14) (15) and (22) this, even beyond the travel for crushing the rubber lung (17), by virtue of the breakage point (20) of the rods attached to the stub axles (2).

Description

La présente invention,concerne un double vérin pneumatique, dont le rôle est celui de servir de butée alternativement aux fusées d'un éssieu auto-directeur,pouvant fonctionner en marche avant et en marche arrière.The present invention relates to a double pneumatic cylinder, the role of which is to serve as a stop alternately with the rockets of a self-steering axle, capable of operating in forward and reverse directions.

L'actuelle utilisation des vases,de type vases de frein de camion,retenue jusqu'ici,donne satisfaction,mais la course de poussée limitée de ces appareils,empêche un braquage suffisant et n'autorise pas de profiter de l'avantage d'une plus grande poussée par effet de levier,des tirants (3),d'une longueur appropriée,sur les fusées(2).The current use of vases, of the type of truck brake vases, retained so far, is satisfactory, but the limited thrust stroke of these devices, prevents sufficient turning and does not allow to take advantage of the advantage of greater leverage, tie rods (3) of appropriate length on the rockets (2).

Pendant le fonctionnement,un des deux doubles vérins de l'éssieu auto-directeur,est sous préssion d'air maximum, pour constituer la butée directionnelle recherchée.During operation, one of the two double cylinders of the self-steering axle is under maximum air pressure, to constitute the desired directional stop.

Inversement l'autre double vérin,doit pouvoir se rétracter pour permettre le pivotement des fusées.Conversely, the other double cylinder must be able to retract to allow the rockets to pivot.

Cet écrasement du poumon caoutchouc(l7) du double vérin semi-dégonflé,même s'il permet aux tiges (14)-(15) et (22),une course plus importante de celle du vase qu'il remplace,ne pourrait,cependant,encore pas suffir,pour obtenir un braquage de 300,voir 40sans cette rupture(20) des tiges de vérin en (14)-(15),qui permet a celle de ces tiges,qui est rattachée a la fusée(2),de la suivre vers l'exterieur.This crushing of the rubber lung (17) of the semi-deflated double cylinder, even if it allows the rods (14) - (15) and (22), a greater stroke than that of the vase it replaces, could not, however, still not enough, to obtain a deflection of 300, see 40 without this break (20) of the cylinder rods in (14) - (15), which allows that of these rods, which is attached to the rocket (2) , to follow it towards the outside.

Grace a des rebords(ll),servant de butée a la tige(l4) et (22),mais aussi de prise aux soufflets(en caoutchouc ou autre) (12) et (5),il est possible de protéger des éjections,le mouvement des tiges(14)-(15) et (22).Thanks to the flanges (ll), serving as a stop for the rod (l4) and (22), but also as a grip for the bellows (rubber or other) (12) and (5), it is possible to protect from ejections, the movement of the rods (14) - (15) and (22).

Des graisseurs(13),sont prévus pour injecter de la graisse d'entretient. Lubricators (13) are provided for injecting maintenance grease.

Des silentblocs boulonnables(24),(sans entretient),servent d'ancrage aux tirants(l9),du double vérin,sur le fourreau(7) de l'éssieu(4).Boltable silentblocs (24), (without maintenance), serve as anchoring to the tie rods (l9), of the double jack, on the sleeve (7) of the axle (4).

Les tubes(16),de ce double vérin pneumatique,sont chemisés par un contretube interne en nylon-téflon,pour ne pas subir d'usure et pour permettre un meilleur glissement des tiges(l4)-(15) et (22).The tubes (16) of this double pneumatic cylinder are lined with an internal nylon-teflon counter-tube, so as not to be subject to wear and to allow better sliding of the rods (14) - (15) and (22).

La prise d'air comprimée(l8),sert a gonfler ou vider les poumons en caoutchouc(l7),lors du fonctionnement.The compressed air intake (18) is used to inflate or empty the rubber lungs (17) during operation.

La Fig.l,montre le comportement en ligne droite,d'un éssieu auto-directeur,équipé des doubles vérins pneumatiques de fonctionnement.Fig.l shows the behavior in a straight line, of a self-steering axle, equipped with double pneumatic operating cylinders.

La Fig.2,montre ce même éssieu dans un virage.Fig. 2 shows this same axle in a bend.

Le double vérin pneumatique du haut,sert ici de butée aux tiges(l5)-(14),et donc,aux tirants(3),des fusées(2), ou ces tiges sont rattachées(24).The double pneumatic cylinder from the top, here serves as a stop for the rods (15) - (14), and therefore, to the tie rods (3), rockets (2), or these rods are attached (24).

Le double vérin du bas de cette Fig.2,se trouve lui au repos,pour ne pas empêcher le libre mouvement des tiges(l4) (15) et (22) et,donc,des fusées(2),qui pourront pivoter autour de l'axe(25).The double jack at the bottom of this Fig. 2 is located at rest, so as not to prevent the free movement of the rods (14) (15) and (22) and, therefore, the rockets (2), which will be able to pivot around of the axis (25).

La barre d'accouplement(6),relaye les fusées entre elle.The coupling rod (6) relays the rockets between them.

La Fig.3,montre un éssieu auto-directeur(4),pris dans son fourreau(7),qui est équipé d'une plaque de glissement nylon-téflon(lO) ,et des lames de ressort(8),retenues par des brides(9).Fig.3 shows a self-steering axle (4), taken in its sheath (7), which is fitted with a nylon-teflon sliding plate (10), and spring blades (8), retained by flanges (9).

La Fig.4,montre un agrandissement des doubles vérins pneumatiques,concernés par cette demande de brevet. Celui du haut,qui est sous pression,sert de butée. Celui du bas qui est au repos(donc presque vidé d'air),permet le libre déplacement des tiges(l4)-(15) et (22),et ce, même au delà de la course d'écrasement du poumon caoutchouc(l7),grâce au point de rupture(20) des tiges rattachées aux fusées(2). Fig.4 shows an enlargement of the double pneumatic cylinders concerned by this patent application. The upper one, which is under pressure, serves as a stop. The lower one, which is at rest (therefore almost emptied of air), allows the free movement of the rods (14) - (15) and (22), even beyond the crushing stroke of the rubber lung ( l7), thanks to the breaking point (20) of the rods attached to the rockets (2).

Ce double vérin Fig.4,se monte et se démonte facilement par déboulonnement des silentblocs(24),et par défilement des tiges(l4),hors de leur tube(16). This double jack Fig.4, is easily assembled and disassembled by unbolting the silentblocs (24), and by scrolling the rods (14), out of their tube (16).

De conception simple,économique et fiable,ce double vérin pneumatique,se revéle ici,comme le meilleur moyen de fonctionnement pour éssieux auto-directeurs marche-avant marche-arrière. Simple, economical and reliable design, this double pneumatic cylinder is revealed here, as the best means of operation for axles self-steering forward-reverse reverse.

Claims (7)

REVENDICATIONS 1/ Double vérin pneumatique (17),caractérisé en ce qu'il comporte deux pistons opposés (22)et introduits dans deux cylindres articulés (16),placés sur le fourreau (7) d'un éssieu auto-directeur (4),pour servir de butée aux tiges directionnelles (15),prévues pour retenir le pivotement des fusées (2),avec le concours des bras (3),et caracterisé surtout,par un grand débattement d'utilisation vide-plein, exploité pour augmenter le bracage.1 / Double pneumatic cylinder (17), characterized in that it comprises two opposite pistons (22) and introduced into two articulated cylinders (16), placed on the sheath (7) of a self-steering axle (4), to serve as a stop for the directional rods (15), designed to retain the pivoting of the rockets (2), with the assistance of the arms (3), and characterized above all, by a large clearance of empty-full use, exploited to increase the poaching. 2/ Double vérin pneumatique,selon revendication l,carac- terisé en ce que,la rupture(20),des tiges(l4)-(15), permet a la tige(l4) de suivre l'ouverture de la fusée(2), même au delà de la course optenue par l'écrasement du poumon caoutchouc(l7),et , et ccci,pour obtenir un plus grand bracage.2 / Double pneumatic cylinder, according to claim 1, characterized in that, the rupture (20) of the rods (14) - (15), allows the rod (14) to follow the opening of the rocket (2 ), even beyond the stroke obtained by the crushing of the rubber lung (l7), and, and ccci, to obtain greater poaching. 3/ Double vérin pneumatique selon revendications 1 et 2,caracterisé en ce que,grace a des rebords(ll) servant de butée,mais aussi de prise pour fixer des soufflets de caoutchouc(ou autre)(12),il est possible de protéger des ejections,les mouvements des tiges(l4)-(15) et (22).3 / Double pneumatic cylinder according to claims 1 and 2, characterized in that, thanks to the flanges (ll) serving as a stop, but also as a socket for fixing rubber bellows (or other) (12), it is possible to protect ejections, movements of the rods (l4) - (15) and (22). 4/ Double vérin pneumatique,selon revendications 1,2 et 3,caracterisé en ce que,lcs tubes(l6) de ces vérins, sont chemisées par un contretube interne en nylon-téflon (ou autre),pour ne pas subir d'usure et pour permettre un meuilleur glissement des tiges(l4)-(15) et (22).4 / Double pneumatic cylinder, according to claims 1, 2 and 3, characterized in that, the tubes (l6) of these cylinders, are lined with an internal nylon-teflon counter-tube (or other), so as not to be subject to wear and to allow a better sliding of the rods (14) - (15) and (22). 5/ Double vérin pneumatique,selon revendications 1,2,3, et 4,caracterisé en ce quc,des graisseurs(l3)sont prévus pour injecter de la graisse d'entretient. 5 / Double pneumatic cylinder, according to claims 1,2,3, and 4, characterized in that, lubricators (l3) are provided for injecting maintenance grease. 6/ Duble vérin pneumatique selon revendications 1,2,3, 4 et 5,caractérisé en ce que,des silentblocs boulonnes(24) (sans entretient),servent d'ancrage flexible aux tirants(l9) du double vérin pneumatique,sur le fourreau(7) de l'éssieu(4). 6 / Double pneumatic cylinder according to claims 1,2,3, 4 and 5, characterized in that, bolt silent blocks (24) (without maintenance), serve as flexible anchoring to the tie rods (l9) of the double pneumatic cylinder, on the sheath (7) of the axle (4). 7/ Double vérin pneumatique,selon revendications 1,2,3, 4, 5 et 6,caracterisé en ce que,la course des tiges,étant plus grande,il est possible d'utiliser des tirants de fusée(3) plus long et donc d'obtenir une plus grande poussée sur les fusées(2),grâce a l'effet de levier. 7 / Double pneumatic cylinder, according to claims 1,2,3, 4, 5 and 6, characterized in that, the stroke of the rods, being greater, it is possible to use longer knuckles (3) and therefore to obtain a greater thrust on the rockets (2), thanks to the leverage.
FR8916520A 1989-12-08 1989-12-08 Double pneumatic thrust cylinder for self-steering axle, designed to obtain a greater degree of turning of the stub axles Pending FR2655604A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8916520A FR2655604A1 (en) 1989-12-08 1989-12-08 Double pneumatic thrust cylinder for self-steering axle, designed to obtain a greater degree of turning of the stub axles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8916520A FR2655604A1 (en) 1989-12-08 1989-12-08 Double pneumatic thrust cylinder for self-steering axle, designed to obtain a greater degree of turning of the stub axles

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FR2655604A1 true FR2655604A1 (en) 1991-06-14

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FR8916520A Pending FR2655604A1 (en) 1989-12-08 1989-12-08 Double pneumatic thrust cylinder for self-steering axle, designed to obtain a greater degree of turning of the stub axles

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1557305A1 (en) * 2004-01-20 2005-07-27 Crossmobil GmbH Vehicle trailer

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE6935369U (en) * 1969-09-09 1970-11-12 Sauer Achsenfab DEVICE FOR STABILIZING TRAILING AXLES
GB1225481A (en) * 1966-12-14 1971-03-17
FR2303681A1 (en) * 1975-03-11 1976-10-08 Quigniot Andre ARM SUSPENSION DEVICE WITH DEFORMABLE QUADRILATER FOR MULTI-WHEEL TRAIN OR HALF-AXLE SELF-FOLLOWING ARMS
FR2304486A1 (en) * 1975-03-18 1976-10-15 Tomarelli Giovanni Self tracking rear wheels for trailer - has wheels pivoted on axle and steered by hydraulic reaction elements
DE3833181A1 (en) * 1988-09-30 1990-04-05 Josef Paul Refitting device for the leading and trailing axles of vehicles

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1225481A (en) * 1966-12-14 1971-03-17
DE6935369U (en) * 1969-09-09 1970-11-12 Sauer Achsenfab DEVICE FOR STABILIZING TRAILING AXLES
FR2303681A1 (en) * 1975-03-11 1976-10-08 Quigniot Andre ARM SUSPENSION DEVICE WITH DEFORMABLE QUADRILATER FOR MULTI-WHEEL TRAIN OR HALF-AXLE SELF-FOLLOWING ARMS
FR2304486A1 (en) * 1975-03-18 1976-10-15 Tomarelli Giovanni Self tracking rear wheels for trailer - has wheels pivoted on axle and steered by hydraulic reaction elements
DE3833181A1 (en) * 1988-09-30 1990-04-05 Josef Paul Refitting device for the leading and trailing axles of vehicles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1557305A1 (en) * 2004-01-20 2005-07-27 Crossmobil GmbH Vehicle trailer

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